Adage Capital Management is among the most secretive hedge funds in the industry, shying away from media inquiries and the public spotlight. But its success in recent years could make it hard for the firm to keep a low profile. Although the Boston-based firm endured 38 percent losses resulting from the 2008 financial crisis, Adage bounced back the following year with 41 percent gains. Investors praised the firm's consistent outperformance of market indexes and ranked the firm No. 1 in performance and investments on Alpha's Hedge Fund Report Card in 2013. The firm's main fund…